/*
 * Copyright (c) 2011, Nikolaus Moll (developer (at) miblounge (dot) net).
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * * Neither the name of the Jombi project nor the
 * names of its contributors may be used to endorse or promote products
 * derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL JOMBI BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 */
package net.miblounge.jombi.impl.util;

import org.jowidgets.common.types.Dimension;
import org.jowidgets.common.types.Rectangle;

import com.trolltech.qt.core.QMargins;
import com.trolltech.qt.core.QRect;
import com.trolltech.qt.gui.QFrame;
import com.trolltech.qt.gui.QWidget;

public final class DecorationCalc {

	private DecorationCalc() {};

	private static boolean isFrame(final QWidget container) {
		if (container instanceof QFrame) {
			return true;
		}

		return false;
	}

	public static Rectangle getClientArea(final QWidget container) {
		final QRect clientArea = container.contentsRect();
		if (isFrame(container)) {
			return new Rectangle(clientArea.x(), clientArea.y(), clientArea.width(), clientArea.height());
		} else {
			final QMargins insets = container.contentsMargins();
			int width = clientArea.width();
			int height = clientArea.height();
			if (insets != null) {
				width = width - insets.left() - insets.right();
				height = height - insets.top() - insets.bottom();
			}
			return new Rectangle(insets.left(), insets.top(), width, height);
		}
	}

	public static Dimension computeDecoratedSize(final QWidget container, final Dimension clientAreaSize) {

		int width = clientAreaSize.getWidth();
		int height = clientAreaSize.getHeight();

		final QMargins insets = container.contentsMargins();
		if (insets != null) {
			width = width + insets.left() + insets.right();
			height = height + insets.top() + insets.bottom();
		}

		//		if (!isFrame(container)) {
		//			width = width + 2;
		//			height = height + 2;
		//		}

		return new Dimension(width, height);
	}

}
